Re: My 4hp Johnson seahorse is loosing power
OK, here's the carb adjustments:<br /><br />(Carburetor Adjustment - Single S/S Adjustable Needle Valve)<br /><br />Initial setting is: Slow speed = seat gently, then open 1-1/2 turns. (All carbs at the<br />same time)<br /><br />(On the following adjustment, finish one carb before going on to the next one, then<br />double check the adjustments).<br /><br />Start engine and set the rpms to where it just stays running. In segments of 1/8<br />turns, start to turn the S/S needle valve in. Wait a few seconds for the engine to<br />respond. As you turn the valve in, the rpms will increase. Lower the rpms again to<br />where the engine will just stay running.<br /><br />Eventually you'll hit the point where the engine wants to die out or it will spit back<br />(sounds like a mild backfire). At that point, back out the valve 1/4 turn. Within that 1/4<br />turn, you'll find the smoothest slow speed setting.<br /><br />When you have finished the above adjustment, you will have no reason to move<br />them again unless the carburetor fouls/gums up from sitting, in which case you<br />would be required to remove, clean, and rebuild the carburetor anyway.<br /><br />You really should consider picking up a manual for your motor. I know it's been said a thousand times here on other posts, but , it's an essential part of owning a motor.<br /><br />BTW: Kudos to Joe Reeves for the above info!!
